ALICE Zero Degree Calorimeters. The new readout system in LHC Run 3. (1st February 2023)

• Record Type: Journal Article
• Authors: Zugravel, S.C.; Cortese, P.; Cotto, G.; De Marco, N.; De Remigis, P.; Lombardo, L.; Mazza, G.; Puggioni, C.; Puleo, E.; Quaglia, L.; Sitta, M.
• Is Part Of: Journal of instrumentation. Volume 18:Number 2(2023)
• Publication Date: 2023-02-01
• Subjects: Front-end electronics for detector readout -- Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases); Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/18/02/C02009
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The Zero Degree Calorimeters (ZDC) were designed to provide the measurement of the event geometry and luminosity in heavy-ion operation. The readout system was redesigned in order to operate in continuous mode without dead time at 2.5 MHz event rate. The new acquisition chain is based on a commercial 12 bit digitizer with a sampling rate of about 1 GSps, assembled on an FPGA Mezzanine Card. The signals produced by the 26 ZDC channels are digitized, and samples are processed through an FPGA to extract information such as timing, baseline average estimation and luminosity.